CVE-2025-66202
Medium · 6.5CVSS
6.5
EPSS
0.3%
Published
Dec 8, 2025
CISA due date
—
The record
Astro has an Authentication Bypass via Double URL Encoding, a bypass for CVE-2025-64765
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| npm | astro | 0 | 5.15.8 |
Related vulnerabilities
- GHSA-ggxq-hp9w-j794 Astro's middleware authentication checks based on url.pathname can be bypassed via url… Same vulnerability
- GHSA-whqg-ppgf-wp8c Astro has an Authentication Bypass via Double URL Encoding, a bypass for CVE-2025-64765 Same vulnerability
- CVE-2026-54298 Astro is a web framework. Also affects astro
- CVE-2026-54299 Astro is a web framework. Also affects astro
- CVE-2026-50146 Astro is a web framework. Also affects astro
- GHSA-jrpj-wcv7-9fh9 Astro: XSS via Unescaped Attribute Names in Spread Props Also affects astro
- GHSA-2pvr-wf23-7pc7 Astro: Host header SSRF in prerendered error page fetch Also affects astro
- GHSA-8hv8-536x-4wqp Astro: Reflected XSS via unescaped slot name Also affects astro